pelosi. >>> now, to the escalating controversy of the use of caffeine in energy drinks and a new line of cracker jacks. the manufacturers say these products are perfectly safe. but the fda is looking into caffeine concerns. and so is abc's jim avila. >> reporter: abc news has obtained 92 of what the fda called adverse event reports. the latest of which is an october death claim of sudden cardiac arrest. the government is founding. but the founder of 5-hour is fighting back, saying his product is not harmful. some people swear by it. >> i feel more alert. i feel awake. >> reporter: others overdo it, as in these youtube videos. >> chug. chug. >> reporter: but this morning, the ceo and founder of 5-hour energy drink, tells abc news that kind of abuse is the only way to hurt yourself with his product. >> if you had ten cups of coffee in an hour, i think you'd end up in a hospital. that would really be a dumb thing to do. >> reporter: bhargava says the deaths and hospitalizations, recording to the fda because of his 5-hour energy drink was because the product was abused. not because it's d